Anyone who watched Generation Iron knows Phil Heath isn’t shy when it comes to criticizing Greene: He refreshed his assault last year after Kai missed the 2015 Mr. Olympia. That said, Greene’s backstory is also no secret. He’s been very open about his past. Greene became a warden of the state at age six, entering Brooklyn’s foster care system due to what he calls a “problematic home environment.” Greene has always listed his year of birth as 1975 (making him 40 at the time this article was written). At this time, zero evidence disputing Greene’s age has surfaced.